<?php
/**
 * Created by PhpStorm.
 * User: Mikkle
 * QQ:776329498
 * Date: 2017/06/19
 * Time: 17:40
 */

namespace mikkle\tp_tools;


class Time
{
    static public function getDefaultTimeString($time=""){

        if (empty($time)){
            return date("Y-m-d H:i:s") ;
        }
        return date("Y-m-d H:i:s", $time) ;

    }
       /**
        * 返回今日开始和结束的时间戳
        *
        * @return array
        */
    public static function today()
{
    return [
        mktime(0, 0, 0, date('m'), date('d'), date('Y')),
        mktime(23, 59, 59, date('m'), date('d'), date('Y'))
    ];
}

    /**
     * 返回昨日开始和结束的时间戳
     *
     * @return array
     */
    public static function yesterday()
{
    $yesterday = date('d') - 1;
    return [
        mktime(0, 0, 0, date('m'), $yesterday, date('Y')),
        mktime(23, 59, 59, date('m'), $yesterday, date('Y'))
    ];
}

    /**
     * 返回本周开始和结束的时间戳
     *
     * @return array
     */
    public static function week()
{
    $timestamp = time();
    return [
        strtotime(date('Y-m-d', strtotime("+0 week Monday", $timestamp))),
        strtotime(date('Y-m-d', strtotime("+0 week Sunday", $timestamp))) + 24 * 3600 - 1
    ];
}

    /**
     * 返回上周开始和结束的时间戳
     *
     * @return array
     */
    public static function lastWeek()
{
    $timestamp = time();
    return [
        strtotime(date('Y-m-d', strtotime("last week Monday", $timestamp))),
        strtotime(date('Y-m-d', strtotime("last week Sunday", $timestamp))) + 24 * 3600 - 1
    ];
}

    /*
     * 返回本月开始和结束的时间戳
     *
     * @return array
     */
    public static function month($everyDay = false)
    {
        return [
            mktime(0, 0, 0, date('m'), 1, date('Y')),
            mktime(23, 59, 59, date('m'), date('t'), date('Y'))
        ];
    }


    /**
     * 返回上个月开始和结束的时间戳
     *
     * @return array
     */
    public static function lastMonth()
{
    $begin = mktime(0, 0, 0, date('m') - 1, 1, date('Y'));
    $end = mktime(23, 59, 59, date('m') - 1, date('t', $begin), date('Y'));

    return [$begin, $end];
}

    /**
     * 返回今年开始和结束的时间戳
     *
     * @return array
     */
    public static function year()
{
    return [
        mktime(0, 0, 0, 1, 1, date('Y')),
        mktime(23, 59, 59, 12, 31, date('Y'))
    ];
}

    /**
     * 返回去年开始和结束的时间戳
     *
     * @return array
     */
    public static function lastYear()
{
    $year = date('Y') - 1;
    return [
        mktime(0, 0, 0, 1, 1, $year),
        mktime(23, 59, 59, 12, 31, $year)
    ];
}

    public static function dayOf()
{

}

    /**
     * 获取几天前零点到现在/昨日结束的时间戳
     *
     * @param int $day 天数
     * @param bool $now 返回现在或者昨天结束时间戳
     * @return array
     */
    public static function dayToNow($day = 1, $now = true)
{
    $end = time();
    if (!$now) {
        list($foo, $end) = self::yesterday();
    }

    return [
        mktime(0, 0, 0, date('m'), date('d') - $day, date('Y')),
        $end
    ];
}

    /**
     * 返回几天前的时间戳
     *
     * @param int $day
     * @return int
     */
    public static function daysAgo($day = 1)
{
    $nowTime = time();
    return $nowTime - self::daysToSecond($day);
}

    /**
     * 返回几天后的时间戳
     *
     * @param int $day
     * @return int
     */
    public static function daysAfter($day = 1)
{
    $nowTime = time();
    return $nowTime + self::daysToSecond($day);
}

    /**
     * 天数转换成秒数
     *
     * @param int $day
     * @return int
     */
    public static function daysToSecond($day = 1)
{
    return $day * 86400;
}

    /**
     * 周数转换成秒数
     *
     * @param int $week
     * @return int
     */
    public static function weekToSecond($week = 1)
{
    return self::daysToSecond() * 7 * $week;
}

    private static function startTimeToEndTime()
{

}

}